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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
CHICAGO BRIDGE & IRON COMPANY	800 JORIE BLVD A CORP OF IL OAK BROOK IL 60521

International Classification(s)

• B01D:SEPARATION

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Fassbender, John J	Plainfield, IL	7	81
# of filed Patents : 7 Total Citations : 81
Ruehrwein, Donald Neil	Plainfield, IL	3	18
# of filed Patents : 3 Total Citations : 18

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Patent Citation Ranking

• 3 Citation Count
• B01D Class

• 4.01 % this patent is cited more than
• 21 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
January 06, 2004	US,6673240,B2   US6673240B2	GRANTED PATENT AS SECOND PUBLICATION
September 19, 2002	US,20020130068,A1   US20020130068A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6673240

Feed control system for liquid clarification tanks

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Abstract

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A control system for an upflow clarification tank comprises a regulator for controlling one or more characteristics of the flow within the tank (such as the power, pressure, velocity, momentum, or velocity head of the flow), a sensor for measuring one or more of the characteristics of the flow, and a linkage that automatically adjusts the regulator to a desired setting based on the sensor measurement. A processor may be used to determine the desired setting for the regulator. The control system may also include structure enabling the operator to manually select between multiple methods for determining the desired setting.

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Description

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Claims

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Legal Events

 

• STCH2016
• FP2016
• LAPS2016
• REMI2015
• FPAY2011
• FPAY2007
• CC2004
• AS2004
• I2004
• P2002
• F2001
• PD2001

Date	Code	Event	Description
Feb 01, 2016	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Jan 06, 2016	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Jan 06, 2016
Jan 06, 2016	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Aug 14, 2015	REMI	MAINTENANCE FEE REMINDER MAILED
Jun 08, 2011	FPAY	FEE PAYMENT	year of fee payment: 8
Jun 08, 2007	FPAY	FEE PAYMENT	year of fee payment: 4
Oct 12, 2004	CC	CERTIFICATE OF CORRECTION
Aug 13, 2004	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FASSBENDER, JOHN J.;RUEHRWEIN, DONALD N.;REEL/FRAME:015676/0745;SIGNING DATES FROM 20010201 TO 20010208 Owner name: CHICAGO BRIDGE & IRON COMPANY, ILLINOIS
Jan 06, 2004	I	Issuance
Sep 19, 2002	P	Published
Mar 16, 2001	F	Filing
Mar 16, 2001	PD	Priority Date